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. 1969 May;63(1):58-64.
doi: 10.1073/pnas.63.1.58.

An effect of postsynaptic neurons upon presynaptic terminals

E E Decima

An effect of postsynaptic neurons upon presynaptic terminals

E E Decima. Proc Natl Acad Sci U S A. 1969 May.

Abstract

Centrifugal ("antidromic") discharges in cat sensory fibers are observed consistently in a variety of experimental preparations and with many different surgical and recording techniques. As is well known, they can be either "spontaneous" or induced by afferent volleys in other sensory fibers. In addition, it is shown here that they can be elicited by antidromic motoneuron activation when the latter is conditioned by natural sensory stimuli or by shocks to the dorsal roots. The latency of the centrifugal dorsal root response to ventral root stimulation is shorter than that of the monosynaptic reflex mediated by the same fibers. An "antidromic" coupling, probably of an electrical nature, between motoneurons and presynaptic terminals is postulated.

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